| /* |
| * Copyright © 2006, 2008 Red Hat, Inc. |
| * |
| * Permission to use, copy, modify, distribute, and sell this software |
| * and its documentation for any purpose is hereby granted without |
| * fee, provided that the above copyright notice appear in all copies |
| * and that both that copyright notice and this permission notice |
| * appear in supporting documentation, and that the name of |
| * Red Hat, Inc. not be used in advertising or publicity pertaining to |
| * distribution of the software without specific, written prior |
| * permission. Red Hat, Inc. makes no representations about the |
| * suitability of this software for any purpose. It is provided "as |
| * is" without express or implied warranty. |
| * |
| * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS |
| * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL, |
| * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER |
| * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR |
| * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| * |
| * Contributor(s): |
| * Kristian Høgsberg <krh@redhat.com> |
| * Behdad Esfahbod <behdad@behdad.org> |
| * Adrian Johnson <ajohnson@redneon.com> |
| */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| |
| #include "cairo-test.h" |
| |
| /*#define ROTATED 1*/ |
| |
| #define BORDER 10 |
| #define TEXT_SIZE 64 |
| #define WIDTH (TEXT_SIZE * 15 + 2*BORDER) |
| #ifndef ROTATED |
| #define HEIGHT ((TEXT_SIZE + 2*BORDER)*2) |
| #else |
| #define HEIGHT WIDTH |
| #endif |
| #define END_GLYPH 0 |
| #define TEXT "cairo" |
| |
| /* Reverse the bits in a byte with 7 operations (no 64-bit): |
| * Devised by Sean Anderson, July 13, 2001. |
| * Source: http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith32Bits |
| */ |
| #define CAIRO_BITSWAP8(c) ((((c) * 0x0802LU & 0x22110LU) | ((c) * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16) |
| |
| #ifdef WORDS_BIGENDIAN |
| #define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) (c) |
| #else |
| #define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) CAIRO_BITSWAP8(c) |
| #endif |
| |
| |
| |
| /* Simple glyph definition. data is an 8x8 bitmap. |
| */ |
| typedef struct { |
| unsigned long ucs4; |
| int width; |
| char data[8]; |
| } test_scaled_font_glyph_t; |
| |
| static cairo_user_data_key_t test_font_face_glyphs_key; |
| |
| static cairo_status_t |
| test_scaled_font_init (cairo_scaled_font_t *scaled_font, |
| cairo_t *cr, |
| cairo_font_extents_t *metrics) |
| { |
| metrics->ascent = 1; |
| metrics->descent = 0; |
| return CAIRO_STATUS_SUCCESS; |
| } |
| |
| static cairo_status_t |
| test_scaled_font_unicode_to_glyph (cairo_scaled_font_t *scaled_font, |
| unsigned long unicode, |
| unsigned long *glyph) |
| { |
| test_scaled_font_glyph_t *glyphs = cairo_font_face_get_user_data (cairo_scaled_font_get_font_face (scaled_font), |
| &test_font_face_glyphs_key); |
| int i; |
| |
| for (i = 0; glyphs[i].ucs4 != (unsigned long) -1; i++) |
| if (glyphs[i].ucs4 == unicode) { |
| *glyph = i; |
| return CAIRO_STATUS_SUCCESS; |
| } |
| |
| /* Not found. Default to glyph 0 */ |
| return CAIRO_STATUS_SUCCESS; |
| } |
| |
| static cairo_status_t |
| test_scaled_font_render_glyph (cairo_scaled_font_t *scaled_font, |
| unsigned long glyph, |
| cairo_t *cr, |
| cairo_text_extents_t *metrics) |
| { |
| test_scaled_font_glyph_t *glyphs = cairo_font_face_get_user_data (cairo_scaled_font_get_font_face (scaled_font), |
| &test_font_face_glyphs_key); |
| int i; |
| unsigned char *data; |
| cairo_surface_t *image; |
| cairo_pattern_t *pattern; |
| cairo_matrix_t matrix; |
| uint8_t byte; |
| |
| /* FIXME: We simply crash on out-of-bound glyph indices */ |
| |
| metrics->x_advance = (glyphs[glyph].width + 1) / 8.0; |
| |
| image = cairo_image_surface_create (CAIRO_FORMAT_A1, glyphs[glyph].width, 8); |
| if (cairo_surface_status (image)) |
| return cairo_surface_status (image); |
| |
| data = cairo_image_surface_get_data (image); |
| for (i = 0; i < 8; i++) { |
| byte = glyphs[glyph].data[i]; |
| *data = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (byte); |
| data += cairo_image_surface_get_stride (image); |
| } |
| cairo_surface_mark_dirty (image); |
| |
| pattern = cairo_pattern_create_for_surface (image); |
| cairo_surface_destroy (image); |
| |
| cairo_matrix_init_identity (&matrix); |
| cairo_matrix_scale (&matrix, 1.0/8.0, 1.0/8.0); |
| cairo_matrix_translate (&matrix, 0, -8); |
| cairo_matrix_invert (&matrix); |
| cairo_pattern_set_matrix (pattern, &matrix); |
| |
| cairo_set_source (cr, pattern); |
| cairo_mask (cr, pattern); |
| cairo_pattern_destroy (pattern); |
| |
| return CAIRO_STATUS_SUCCESS; |
| } |
| |
| static cairo_status_t |
| _user_font_face_create (cairo_font_face_t **out) |
| { |
| static const test_scaled_font_glyph_t glyphs [] = { |
| { 'c', 6, { 0x00, 0x38, 0x44, 0x80, 0x80, 0x80, 0x44, 0x38 } }, |
| { 'a', 6, { 0x00, 0x70, 0x88, 0x3c, 0x44, 0x84, 0x8c, 0x74 } }, |
| { 'i', 1, { 0x80, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80 } }, |
| { 'r', 6, { 0x00, 0xb8, 0xc4, 0x80, 0x80, 0x80, 0x80, 0x80 } }, |
| { 'o', 7, { 0x00, 0x38, 0x44, 0x82, 0x82, 0x82, 0x44, 0x38 } }, |
| { -1, 8, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }, |
| }; |
| |
| cairo_font_face_t *user_font_face; |
| cairo_status_t status; |
| |
| user_font_face = cairo_user_font_face_create (); |
| cairo_user_font_face_set_init_func (user_font_face, test_scaled_font_init); |
| cairo_user_font_face_set_render_glyph_func (user_font_face, test_scaled_font_render_glyph); |
| cairo_user_font_face_set_unicode_to_glyph_func (user_font_face, test_scaled_font_unicode_to_glyph); |
| |
| status = cairo_font_face_set_user_data (user_font_face, |
| &test_font_face_glyphs_key, |
| (void*) glyphs, NULL); |
| if (status) { |
| cairo_font_face_destroy (user_font_face); |
| return status; |
| } |
| |
| *out = user_font_face; |
| return CAIRO_STATUS_SUCCESS; |
| } |
| |
| static cairo_test_status_t |
| draw (cairo_t *cr, int width, int height) |
| { |
| cairo_font_face_t *font_face; |
| const char text[] = TEXT; |
| cairo_font_extents_t font_extents; |
| cairo_text_extents_t extents; |
| cairo_status_t status; |
| |
| cairo_set_source_rgb (cr, 1, 1, 1); |
| cairo_paint (cr); |
| |
| #ifdef ROTATED |
| cairo_translate (cr, TEXT_SIZE, 0); |
| cairo_rotate (cr, .6); |
| #endif |
| |
| status = _user_font_face_create (&font_face); |
| if (status) { |
| return cairo_test_status_from_status (cairo_test_get_context (cr), |
| status); |
| } |
| |
| cairo_set_font_face (cr, font_face); |
| cairo_font_face_destroy (font_face); |
| |
| cairo_set_font_size (cr, TEXT_SIZE); |
| |
| cairo_font_extents (cr, &font_extents); |
| cairo_text_extents (cr, text, &extents); |
| |
| /* logical boundaries in red */ |
| cairo_move_to (cr, 0, BORDER); |
| cairo_rel_line_to (cr, WIDTH, 0); |
| cairo_move_to (cr, 0, BORDER + font_extents.ascent); |
| cairo_rel_line_to (cr, WIDTH, 0); |
| cairo_move_to (cr, 0, BORDER + font_extents.ascent + font_extents.descent); |
| cairo_rel_line_to (cr, WIDTH, 0); |
| cairo_move_to (cr, BORDER, 0); |
| cairo_rel_line_to (cr, 0, 2*BORDER + TEXT_SIZE); |
| cairo_move_to (cr, BORDER + extents.x_advance, 0); |
| cairo_rel_line_to (cr, 0, 2*BORDER + TEXT_SIZE); |
| cairo_set_source_rgb (cr, 1, 0, 0); |
| cairo_set_line_width (cr, 2); |
| cairo_stroke (cr); |
| |
| /* ink boundaries in green */ |
| cairo_rectangle (cr, |
| BORDER + extents.x_bearing, BORDER + font_extents.ascent + extents.y_bearing, |
| extents.width, extents.height); |
| cairo_set_source_rgb (cr, 0, 1, 0); |
| cairo_set_line_width (cr, 2); |
| cairo_stroke (cr); |
| |
| /* text in black */ |
| cairo_set_source_rgb (cr, 0, 0, 0); |
| cairo_move_to (cr, BORDER, BORDER + font_extents.ascent); |
| cairo_show_text (cr, text); |
| |
| |
| /* filled version of text in blue */ |
| cairo_set_source_rgb (cr, 0, 0, 1); |
| cairo_move_to (cr, BORDER, BORDER + font_extents.height + 2*BORDER + font_extents.ascent); |
| cairo_text_path (cr, text); |
| cairo_fill (cr); |
| |
| return CAIRO_TEST_SUCCESS; |
| } |
| |
| CAIRO_TEST (user_font_mask, |
| "Tests a user-font using cairo_mask with bitmap images", |
| "user-font, mask", /* keywords */ |
| NULL, /* requirements */ |
| WIDTH, HEIGHT, |
| NULL, draw) |